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Unformatted text preview: x 3 dx e x " 1 # $ = % 4 15 .) b. Now, do a similar calculation to give an expression for the total energy density above a certain frequency, o , where o is high enough to assume that h o >> kT. In this case, the integral will have a lower limit of o . The integration becomes quite easy if you modify the spectrum expression as allowed by the condition on the frequency limit....
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This document was uploaded on 03/27/2010.
 Spring '09

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